资源描述：
《高含水期油藏储集层物性变化特征模拟研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、第25卷第6期石油学报Vol.25No.62004年11月ACTAPETROLEISINICANov.2004文章编号:0253O2697(2004)06O0053O06高含水期油藏储集层物性变化特征模拟研究1,22122王洪光蒋明张继春张国刚宋富霞(11石油大学北京102249;21华北油田勘探开发研究院河北任丘062552)摘要:在华北油区的5个主力高含水期砂岩油田不同沉积微相带上选取了具有可对比性的292块岩样,采用室内模拟实验技术、密闭取心井分析技术和示踪剂监测技术,对储集层物理特征的变化进行了研究。结果表明,曲流河道和水下分流河道储集层物性
2、相对较好,长期水驱后变化幅度较大,其渗透率和孔喉半径分别升高了38%和17%,排驱压力和粘土矿物含量分别约降低了23%和24%。河口坝和近岸滩坝储集层物性较差,长期水驱后其变化幅度相对较小,渗透率和孔喉半径分别升高了17%和12%,排驱压力和粘土矿物含量分别约降低了11%和17%。各种储集层敏感性减弱,油水相对渗透率曲线发生了一定程度的变化,油层润湿性主要从弱亲水变为强亲水。该研究成果在制定高含水期油田开发调整方案、选择注采调整措施及设计三次采油方案中得到较好的应用。关键词:注水开发;储集层;渗透率;孔隙度;润湿性;渗流规律;动态变化;华北油田中图分
3、类号:TE357文献标识码:ASimulationonvariationofphysicalpropertiesinhighwater-cutreservoir1,22122WANGHong-guangJIANGMingZHANGJi-chunZHANGGuo-gangSONGFu-xia(1.CollegeofPetroleumEngineering,UniversityofPetroleum,Beijing102249,China;2.ResearchInstituteofPetroleumExplorationandDevelopment,Hu
4、abeiOilfield,Renqiu062552,China)Abstract:Twohundredsandninetytwoblocksofrocksampleswereselectedfromdifferentmicro-sedimentaryfaciesinfivemainsandstonereservoirsduringhighwater-cutproductionperiodinHuabeiOilfield.ThechangesofphysicalpropertiesofreservoirinHuabeiOilfieldwerequant
5、itativelystudied,byusingtechniquesofsimulationtestsinlaboratory,sealedcoringwellanalysesandtracermonitors.Afterlong-termwaterflooding,thereservoirphysicalpropertiesofmeanderingchannelsandthesubaqueouschannelswerebetter.Thepermeabilityandtheradiusofporousthroatwereraisedby38perc
6、entand17percentrespectively.Thedrainagepressureandcontentofclaymineralwerere2ducedby23percentand24percentrespectively.Thereservoirphysicalpropertiesofthemouthbarandinshorebeachbarhavelesschangesafteralong-termwaterflooding.Theoil-waterrelativepermeabilitycurvechanged,andtherese
7、rvoirwettabilitychangedfromweakhy2drophiletostronghydrophile.Thepermeabilityandradiusofporousthroatincreasedby17percentand12percentrespectively,andthedrainagepressureandcontentofclaymineralreducedby11percentand17percentrespectively.Thestudyresulthasbeensuccessfullyap2pliedtomak
8、ethedevelopmentandadjustmentprojects,selectroutinemeas
